American researcher David Johnson, comes up with a new and intriguing explanation on one of the most enigmatic sites in world. The mysterious lines, figures and signs on Nazca Plain have been researched and examined for decades since last century and there are almost a dozen theories about their “purpose” and function. Among them were, Swiss writer Erich von Daeniken’s “ancient airport” theory which made the headlines in 1970s. Now, Johnson suggests an interesting explanation for these enigmatic lines, which connects them to the underground water sources.